– Lat/Long: 48.71° N 121.99° W
South Twin Sister Weather Forecast
Cascade Range · United StatesIssued: 10 pm Tue 15 Sep Local Time
Updates in:
Update imminent hr min s
Issued: 10 pm Tue 15 Sep Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryMostly dry. Warm (max 23°C on Thu afternoon, min 12°C on Tue night). Wind will be generally light. | Days 5–7 Weather SummarySome drizzle, heaviest during Mon morning. Warm (max 21°C on Sun afternoon, min 11°C on Sun night). Wind will be generally light. | |||||||||||||||
Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | ||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | |  | | | | | | | | | | | |  | |
rain shwrs | clear | clear | clear | clear | clear | clear | clear | clear | clear | clear | clear | clear | clear | clear | some clouds | |
Cloud base (m) | 9550 | 9600 | 8950 | 8650 | ||||||||||||
km/h | ||||||||||||||||
 |  |  |  |  |  | |||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | 0.1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
max °C | 13 | 19 | 22 | 17 | 21 | 23 | 17 | 18 | 20 | 15 | 17 | 20 | 16 | 20 | 21 | 16 |
min °C | 12 | 13 | 21 | 16 | 17 | 22 | 14 | 14 | 20 | 13 | 14 | 20 | 15 | 16 | 20 | 11 |
chill °C | 12 | 13 | 21 | 16 | 17 | 22 | 14 | 14 | 20 | 13 | 14 | 20 | 15 | 16 | 20 | 11 |
Freezing level m | 3300 | 3650 | 3850 | 3950 | 4000 | 3950 | 3850 | 3700 | 3750 | 3950 | 3850 | 3850 | 3950 | 3800 | 3700 | 3300 |
 | — | 6:45 | — | — | 6:46 | — | — | 6:48 | — | — | 6:48 | — | — | 6:50 | — | — |
 | — | — | 7:19 | — | — | 7:16 | — | — | 7:14 | — | — | 7:12 | — | — | 7:09 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Mostly dry. Warm (max 23°C on Thu afternoon, min 12°C on Tue night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Some drizzle, heaviest during Mon morning. Warm (max 21°C on Sun afternoon, min 11°C on Sun night). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Twin Sister. To see the weather forecasts for the other elevations, use the tab navigation above the table. For a wider overview of the weather, consult the Weather Map of Washington.
| Weather Station | Temp. | Weather | Wind | Gusts | Cloud / Visibility |
|---|---|---|---|---|---|
SHIP5307 | |||||
 | |||||
Bellingham Airport | | ||||
* NOTE: not all weather observatories update at the same frequency which is the reason why some locations may show data from stations that are further away than known closer ones.